CB0 REV 07 710-021523 ABBC8281 MX SCB
CB1 REV 07 710-021523 ABBC8323 MX SCB
SCB details are displayed as above, along with other hardware components. The
MX480 router has only two SCBs and each SCB has four fabric planes.
3. Establish console connections to both Routing Engines. You can use a telnet session
to connect to the router console by issuing the <router name>-con command. For
example, if the router name is juniper, you can connect to RE0 and RE1 consoles by
issuing the telnet juniper-con and telnet juniper1-con commands.
4. Ensure that graceful switchover (GRES), commit synchronize (required for nonstop
routing), and nonstop routing (NSR) are enabled or configured by running the set
chassis redundancy graceful-switchover, set system commit synchronize, set
routing-options nonstop-routing commands.
NOTE: These commands are mandatory for this upgrade and may be
removed, if desired, after the upgrade.
5. Set the upgrade flag on, and start the SCB upgrade by issuing the set chassis state
cb-upgrade on command.
user@host# configure
user@host# set chassis state cb-upgrade on
user@host# commit
6. Determine the order to replace the existing SCBs with upgraded ones. SCB0 is
associated with RE0 and SCB1 is associated with RE1.
NOTE: Do not add or remove any router hardware during the upgrade
procedure.
Copyright © 2017, Juniper Networks, Inc.386
MX480 3D Universal Edge Router Hardware Guide
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